The ohm number of my receiver really confuses me, but it has been working really well for the time I own it, so I don´t want to replace it until it´s broken - and because the new consoles have eaten my money reserves.

After moving into a student flat I used a cheap Sony MDRZX300B with 24 ohm on my receiver and it worked not that worse, but perhaps it was only because I don´t know how good something like the MA 900 could sound...

My brother has a similar old, but nevertheless absolutely better Yamaha receiver with which he is running a DT 990 Pro 250ohm version.

He likes it, but IMO it had too high treble what I found ear piercing and I can imagine I would get headache after hours of using it.

Besides the treble I think the DT 990 Pro is an amazing sound experience.

Nevertheless, I will test the MA 900 and hope it will fit my taste.

Thanks for your response Chicolom.

PS:

A real pity I am not living in the US, otherwise I would have ordered the Fidelio X1 for the price of 150$...